So it appears, Benioff and Weiss know something about The Others that has yet to be revealed to book readers. This was pointed out on the Winter Is Coming Website. They are making a purposeful arrangement of the dead bodies killed by The White Walkers.
From the Pilot Episode:
Forthcoming spoiler is Jon and the Wildlings will see a similar display in the 2nd/3rd episode of this season when they reach the Fist of the First Men.
Actual Game of Thrones Logos
No matter the logo, they have put a straight line through all of the letter "o", which is exactly how they are arranging the bodies on screen of those killed by the White Walkers. So, as the people at Winter is Coming have pointed out, 1 time is maybe a coincidence, but when it happens again and again up it means some sort of subliminal message.
Also, what I find most interesting is the line goes through the "o" on the Stark logo too.
So I would say I think I agree with those people, the TV guys know something about what that arrangement means that Martin hasn't written about yet.